Grate



E. 1. BERGE. GRATE.

APPLICATION FILED MAR. 13, 1918i 1,378,086. Patented May 17,1921.

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AW 5. VVLW E. I. BERGE. GHATE.

ED MARQ13. 1918.

APPLICATION FIL Patented May 17, 1921.

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Inventor II I: I;

II I II H I II I I I I I I I- I I I I W272 655' es i z.

E. J. BERGE- GBATE.

APPLICATION FILED MAR, 13. 1918.

1,878,086. Patnted May 17, 1921.

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UNITED OFFICE:

ERIKfJ- BERGE, OF BAYAT I, CUBA.

. GBATE. 7

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To all whom it may concern:

Be it known that I, ERIK J. Bnncn, a citizen of Sweden, residing at Bayati, in the Island of Cuba, have invented certain new and useful improvements in Grates, of which the following is a specification. I

This invention relates to improvements in grates and more particularly to furnace grates. Its main object is to provide a furnace grate so constructed as to admit a predetermined amount of air to the fire bed. A further object is to provide a novel form of grate that is simple in construction and operation and that is adapted to economize in the use of fuel. With the foregoing and other objects in view the invention consists in the combination and arrangement of parts to be hereinafter fully described in this specification, pointed out in the appended claims and illustrated in the accompanying drawings which form a part of said specification and in which Figure 1 is a side elevation of my ,improved grate partly in section.

Fig. 2 is a top plan view, partly in section and partly broken awayto afford a better illustration, taken on line 22 of Fig. 1.

Figs. 3 and 4 are fragmentary views illustrating theconstruction of the grate bars.

Fig. 5 is a plan view of the grate with the grate bars eliminated.

Like reference characters denote corresponding parts throughout.

The reference numeral 1 denotes the fire box which is provided with the longitudi-b nally extending rails 2 whereon the wheels v '3 run that support the carriage 4 that carries the adjustable frame 5 which is composed of a plurality of levers pivoted together in lazy-tong fashion so that said be extended or contracted. The said frame at its forward end is connected by double links 6 to guardbars 7?,

7 of the box 1. Said frame 5 is also engaged at its front end by a rack 7 whichextends through an opening in the front end of the said box 1. A. segment 8 fast upon a rod 9, journaled in bearings 10 carried by the carriage 4:, is in mesh with the said rack 7 and a lever 11 fast upon said rod 9 extends through the opening 12 in the front end of the fire box and serves to rotate said rod 9 and so actuate said segment. I

. Grate bars 13 spaced apart are formed with longitudinal slots 14 in which the castings 15 are disposed that are. formed with longitudinal slots 16 through which theibolts 17 extend that also pass through pivotal points 18 of frame 5. whereby. said grate the lever 11 is manually raised thereby narrowing the width and extending the length of the frame 5, since said frame is connected to the said links 6 and is operably connected to said rack 7 in mesh with the segment '8 controlled by said lever. The fuel lies directly upon the grate bars and is pre-,

vented fromfalling off the same at-each end of the carriage 4 by the guard ribs 21. The said carriage 4.- is mounted upon wheels to facilitate its complete removal from the fire box when desired for purpose of repair, cleaning purposes or the like.

What is, claimed is 1. Ina furnace construction, a fire box, a

, carriage removably. disposed within said fire box, grate bars, a frame secured to said grate bars and composed ofparts pivotally secured together and relatively adjustable to' vary the length of the frame, thereby vary- Specificationof Letters Patent. Pater 1 a 1\ [a,y 1'? 1921'. 5 Application filedIvIarch 13, 1 91s. Serial No. 222,223. T

ing the distance between the grate bars, and

manually operable means mountedon said carriage and engaging said frame for ad justing the latter.

2. In a furnace construction, a firebox,

rails extending longitudinallyiof said fire box, a wheeledcarriage removably disposed upon said rails, spaced slotted grate bars, a

frame secured to the slotted portions of said. grate bars and composed of parts-pivotally secured together and relatively adjustableto vary the length of the frame, thereby vary- I ing the distance between the grate bars, and manually operable means'mounted on said carriage and engaging said frame for adjusting the latter. a

3.:In a furnace construction, a fire box, a

carriage removably disposed in said fire box,

spaced slotted grate bars, a frame secured to the slotted portions of said grate bars and composed of parts pivotally secured together and relatively adjustableto vary the length of the frame, thereby varying the distance between the grate bars, a rack carried by said frame, and a toothed segment carrack.

4. In a furnace construction, a fire box, a carriage removably disposed wlthln sald fire box, spaced grate bars formed with rearwardly extending flanges to bridge the spaces between the bars, a frame secured to the slotted portions of said grate bars and composed of parts pivotally secured t0- i v gether and relatively adjustable to vary the 10 length of the frame, thereby varying the ried by said carriage and in mesh With'said" distance between the grate bars, and manually operablemeans mounted on said car- WVitnesses:

N. O. Nn soN, HARRY W. STORY.

ERIK J. BERGE. 

